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Solution: String Compression

Explore how to apply the two-pointer pattern for in-place string compression by grouping consecutive characters. Learn to modify the input array without extra space and return the new length, mastering an efficient approach relevant for coding interviews.

Statement

Given an array of characters, chars, compress it in place according to the following rules:

  1. Start with an empty string s.

  2. For each group of consecutive repeating characters in chars:

    1. If the group length is ...